Identifying SFP or fibre connections from switchports

[suthomas1]

Hi All,

We have some server connections which are being checked for moving to a different location.

The switch ( most of them 6500, 4500 and 4900) shows the ports for these servers as one gig connections.

The dilemma here is to find out if these are ethernet connections & if they are fibre, are their any SFP's connected on the port.

What i understand is if the interface shows 10/100/1000 TX - it indicates a ethernet connection with no SFP involved.

Please correct if this is wrong and let me know the way out. Thanks in advance.

[Reza Sharifi · Accepted solution]

It doesn't matter copper or fiber, they are both Ethernet.

As for it is copper interface of fiber.  If you issue for example:

sw1#sh interfaces tenGigabitEthernet 1/0/1 capabilities
TenGigabitEthernet1/0/1
  Model:                 WS-C3750E-48PD
  Type:                  Not Present
  Speed:                 10000
  Duplex:                full

So this is 10Gig fiber and there is no optics inserted

and this is a copper interface 10/100/1000

sw1#sh interface g 1/0/1 capabilities                   
GigabitEthernet1/0/1
  Model:                 WS-C3750E-48PD
  Type:                  10/100/1000BaseTX
  Speed:                 10,100,1000,auto

and for 1Gig fiber it should show:

Speed:                 1000
  Duplex:                full

HTH

[Peter Koltl]

show interface status